privacy.request_hostnames_with_cname broke in 2025, but worked in 2024

[max-ostapenko]

The first thing to troubleshoot is to check the data from WPT_DNS:

• https://github.com/HTTPArchive/wptagent/blame/main/internal/devtools.py#L1026
• https://github.com/HTTPArchive/wptagent/blob/a78763603bbfde39c6ae168591cdd0d55c0efb3d/internal/devtools_browser.py#L660